One answer appeared in 1969, when the German researcher and writer Erich von Daniken proposed that the lines were drawn by extraterrestrials as runways for their aircraft.
1969年,德国研究人员兼作家埃里希·冯·丹尼肯提出,这些线条是外星人为它们的飞机绘制的跑道。
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Its lawmakers gave preliminary approval last week to a law that would make it a crime to employ ultra-thin models on runways.